Atoms & Isotopes (AQA GCSE Physics Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What are the three main particles that make up atoms?
What are the three main particles that make up atoms?
Protons, neutrons, electrons
Which particles are found in the nucleus of an atom?
Which particles are found in the nucleus of an atom?
Protons and neutrons
What is the electrical charge of a proton?
What is the electrical charge of a proton?
+1
What is the electrical charge of a neutron?
What is the electrical charge of a neutron?
0
What is the mass of an electron compared to protons and neutrons?
What is the mass of an electron compared to protons and neutrons?
Virtually no mass
Why do atoms have no overall charge?
Why do atoms have no overall charge?
Equal numbers of protons & electrons
What determines what element an atom is?
What determines what element an atom is?
Number of protons
What is the typical diameter of an atom?
What is the typical diameter of an atom?
m
How much smaller is the nucleus compared to the whole atom?
How much smaller is the nucleus compared to the whole atom?
100,000 times smaller
What percentage of an atom's mass is in the nucleus?
What percentage of an atom's mass is in the nucleus?
Over 99%
What happens when an electron absorbs electromagnetic radiation?
What happens when an electron absorbs electromagnetic radiation?
It jumps to a higher energy level
What happens when an electron emits electromagnetic radiation?
What happens when an electron emits electromagnetic radiation?
It drops to a lower energy level